Die Suche ergab 25 Treffer

von StefanD
31.10.2022, 19:07
Forum: HomeMatic - english
Thema: HM-Sec-SC-2
Antworten: 0
Zugriffe: 679

HM-Sec-SC-2

Dear all, My HM-Sec-SC-2 seems to be dead :-( A couple of days ago, it began to give a service message in the WebUI, probably because the batteries were dead. Unfortunately, after replacing the batteries, the device does not respond at all. The LED doesn't even blink. The new batteries are fine (alm...
von StefanD
11.12.2020, 16:18
Forum: HomeMatic - english
Thema: Minimum valve opening value for individual TRV
Antworten: 37
Zugriffe: 8705

Re: Minimum valve opening value for individual TRV

That is indeed very important: you need to block the driver before the pin in the valve is fully pressed into the radiator valve.
von StefanD
11.12.2020, 14:25
Forum: HomeMatic - english
Thema: Minimum valve opening value for individual TRV
Antworten: 37
Zugriffe: 8705

Re: Minimum valve opening value for individual TRV

I had the same problem with my Danfoss valves: They do not really open until the TRV reaches somewhere between 15 and 20%. I solved this by inserting some small metal rings (like a M3 nut) around the pin of the valve: this prevents the pin to be closed fully and thereby shifting the range of the TRV...
von StefanD
04.11.2020, 08:25
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

Re: HM-ES-PMSw1-PL is dead

Good news: I replaced diode D9 and now the switch functions again as it should :-)
Thanks to everyone who provided hints and tips!
von StefanD
29.10.2020, 21:05
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

Re: HM-ES-PMSw1-PL is dead

An update: I bought a 50W soldering station and with that, I was able to desolder the fuse and the VDR. After I replaced both, the switch came back to life, just as you predicted :-) Everything is OK, except that the relais doesn't switch. I have desoldered that one too and found that it's OK. It sw...
von StefanD
17.10.2020, 22:36
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

Re: HM-ES-PMSw1-PL is dead

No, I'm not sure the relais is defect. I am sure that the measurement of (about) 0 ohm is correct, but that is with the relais soldered to the print. I'm not sure if it's the relais that causes the short-circuit, or another component near to it... (That's why I wanted to remove the relais) I measure...
von StefanD
17.10.2020, 19:58
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

Re: HM-ES-PMSw1-PL is dead

Stan, Don, Thanks for your replies. I did try a bigger tip and fresh solder, but that didn't help. I don't have a variable-temperature soldering iron, just a basic Antex 25W. (I also have a big 200W Weller, but that's a bit overkill I think.) Do you think a higher temperature iron will do the job? (...
von StefanD
16.10.2020, 18:53
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

Re: HM-ES-PMSw1-PL is dead

I checked the fuse and the resistor. The fuse seems blown: its resistance is infinite. The resistor R2 seems OK: it still measures 1KOhm. I do wonder why the fuse is blown. Can it be that the relais draws too much current (I measure 0 Ohm on the 12V pins)? I have tried to desolder the relais from th...
von StefanD
15.10.2020, 22:23
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

Re: HM-ES-PMSw1-PL is dead

Thanks for the schematic! I'll check both and post the results.
von StefanD
15.10.2020, 19:54
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 2423

HM-ES-PMSw1-PL is dead

Hi all, Suddenly my HM-ES-PMSw1-PL stopped working. I was using a jigsaw connected to it when suddenly the power was cut. Even the led of the HM-ES-PMSw1-PL doesn't work anymore. It seems like a fuse has blown, however it doesn't seem to contain a fuse. I opened it, but saw nothing that seems to be ...

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